KR20120040939A - Welding apparatus - Google Patents

Abstract

PURPOSE: A welding apparatus is provided to easily adjust the gap of supporting rollers without the replacement of a pipe supporting member although the size of the pipe is changed. CONSTITUTION: A welding apparatus(10) includes a base member, a transferring member(200), a welding member(300), and a pipe supporting member(400). The base member includes a rotatable case(130). The transferring member includes a supporting post(210) and a ball screw part(230). The supporting post is formed at one upper part of the case. The ball screw part is combined with the supporting post. The welding member is vertically moves through the transferring member. A welding torch(310) is formed at end part of a supporting structure in connection with the supporting post. The welding member moves the welding torch to the vertical direction and to the horizontal direction.

Description

Welding device {WELDING APPARATUS}

The present invention relates to a welding device, and more particularly to a welding device for welding the connecting portion of the pipe.

As is well known, piping lines are interconnected such that a plurality of pipes of constant diameter form a continuous conduit.

Such piping lines may be installed to transfer crude oil or natural gas extracted from offshore oil or offshore gas extraction facilities to land storage facilities hundreds of kilometers or more, and pipes of various sizes and types may be installed in the vessel's internal facilities. A plurality of pipes can be installed, and automatic welding equipment has been developed and used for the automation of welding work to connect through welding.

Meanwhile, the welding equipment may weld the pipes by, for example, a tungsten inert gas (TIG) welding method. This TIG welding method shields the air with an inert gas between the tungsten electrode (-) and the base material (+) of the welding torch and breaks the insulation between the electrode and the base material to generate an arc, and generates the base material using the generated arc heat and the solvent. Means the welding method.

In the description of the technique of welding pipes using such welding equipment, the pipes to be welded to each other are seated on the roller structure, and the welding torch is moved to the welding position to perform the TIG welding while driving the rollers to rotate the pipes. By doing this, welding can be performed along the circumference of the pipe.

However, the welding equipment as described above must be equipped with a roller structure having a roller spacing corresponding to the size of the pipe (that is, the outer diameter of the pipe), so when the welding work of pipes of different pipe sizes are used. There is a problem that can be carried out only to replace the pipe welding work.

In addition, since the welding torch provided in the welding equipment as described above is fixed to the support and the movement of the welding torch is not smooth, it is difficult to perform a welding operation for a desired area when the size of the pipe is large and the welding area is large. have.

Embodiments of the present invention to provide a welding device that can stably support the pipe to be welded by adjusting the interval of the roller in accordance with the size of the pipe.

In addition, embodiments of the present invention to provide a welding device that can accurately adjust the movement of the welding torch according to the welding position.

The objects of the embodiments of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description .

According to an embodiment of the present invention, a base member including a rotatable case, a support post provided at an upper end of the case, a transfer member including a ball screw portion coupled to the support post, and through the transfer member A welding torch is provided at the end of the supporting structure connected to the support post in the vertical direction, and a welding member for moving the welding torch in the vertical direction and the horizontal direction, and adjusting the distance between the rollers according to the size of the welding pipe. Thus, a welding apparatus including a pipe support member for supporting the welding pipe may be provided.

Embodiments of the present invention, since the block to which the welding torch is coupled in the inner space of the end portion extending to the end of the support structure can move in the vertical direction and the horizontal direction, it is possible to precisely adjust the welding torch of the pipe to be welded The welding can be precisely adjusted according to the welding position.

In addition, since the roller to be supported according to the size of the pipe to be welded, for example, the outer diameter, can be moved in the inward or outward direction, even when the pipe size is changed, the support roller can be replaced without replacing the pipe support member. The spacing between them can be easily adjusted to make the welding work more efficient.

1 is a view illustrating a welding device for performing a pipe welding operation according to an embodiment of the present invention,
2 illustrates a welding torch moving unit for moving a welding torch according to an embodiment of the present invention;
3 illustrates a welding member of a welding apparatus according to an embodiment of the present invention;
4 illustrates a pipe support member having a support roller adjusted according to a pipe size according to an embodiment of the present invention;
5 illustrates a roller conveying portion of a pipe support member in accordance with an embodiment of the present invention.

Advantages and features of the embodiments of the present invention, and methods of achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

In describing the embodiments of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the embodiments of the present invention, which may vary according to intentions or customs of users and operators. Therefore, the definition should be based on the contents throughout this specification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view illustrating a welding device for performing a pipe welding operation according to an embodiment of the present invention.

Referring to FIG. 1, the welding apparatus 10 may include a base member 100, a transfer member 200, a welding member 300, a pipe support member 400, and the like.

Here, the base member 100 is for moving and supporting the welding apparatus 10, and the trolley 110, the support frames 120a and 120b, the case 130, the case support part 140, and the first driving part ( 150) and the like.

The trolley 110 is provided with a moving wheel 111 at the bottom to move the equipment of the welding device 10 to a desired position. Here, in the embodiment of the present invention has been described as having a moving wheel 111 as a moving means, of course, can be moved through a moving rail provided on the bottom surface.

Support frame (120a, 120b) is a structure provided in the vertical direction on one side and the other side of the bogie 110, it is coupled through the case support portion 140 can support the case 130 on the top of the bogie 110 have.

At this time, the case 130 is coupled through the case shaft 141 provided on the upper end of one side of the support frame (120a, 120b) of the support frame (120a, 120b) is rotatable along the centerline of the case shaft 141, one side The guide rod 142 provided on the support frame 120a may be moved along the groove of the guide plate 243 provided on the side of the case 130 in the same direction, and the case 130 may include the other support frame 120b. It can be rotated in engagement with the rotary rack 144 provided in the direction. At this time, the case 130 may be provided with a support plate 131 for installing and supporting the transfer member 200 and the pipe support member 400 on the top.

The first driving unit 150 is provided at the lower end of the other support frame 120b to generate driving force for rotation of the case 130 and may include a driving motor, a gear box, and the like.

In addition, the transfer member 200 may move the welding member 300 up and down, and may include a support post 210, a second driving unit 220, a first ball screw unit 230, and the like.

The support post 210 may be provided in the other direction of the upper end of the support plate 131 and may be coupled to the welding member 300 to support the welding member 300. Here, the support post 210 may be provided with a post rail 211 for the movement of the welding member 300 on one side.

The second driving unit 220 may generate a driving force for moving the welding member 300 coupled to the support post 210 in the vertical direction, and transmit the driving force to the first ball screw unit 230.

The first ball screw unit 230 transfers the welding member 300 in the vertical direction by using the driving force transmitted from the second driving unit 220, and the upper bearing block 231 provided at the upper end of the support post 210. ) And the first ball screw shaft 233 coupled to the lower bearing block 232 provided at the bottom thereof may be rotated through a driving force transmitted from the second driving unit 220, and the first ball screw nut block 234 may be rotated. As the first ball screw shaft 233 rotates in the vertical direction, the welding member 300 connected to one side of the first ball screw nut block 234 may be transferred in the vertical direction.

Next, the welding member 300 performs the pipe welding by moving the provided welding torch 310 to be in close contact with the pipe. The welding torch 310, the welding member support part 320, the end part 330, and the pipe are carried out. The contact part 340, the welding torch moving part 350, and the wire feeder part 360 may be included.

One end of the welding member support part 320 is connected to one side of the first ball screw nut block 234 provided in the transfer member 200, and an end portion 330 to which the welding torch 310 is coupled to the other end thereof. It may be provided. Here, the welding member support 320 may be formed to surround the support post 210 at one end thereof, and may be formed to have a groove corresponding to the post rail 211.

The end portion 330 is connected to the other end of the welding member support part 320 and may include a welding torch moving part 350 therein, and moves the welding torch moving part 350 in the vertical direction on an inner side thereof. A rail may be provided for the purpose.

The pipe contact part 340 may be provided at the lower end of the end part 330 and may be in close contact with the outer circumferential surface of the pipe to be welded through the roller provided at the lower end thereof.

The welding torch moving part 350 may be provided inside the end part 330, and may include blocks that may be combined with the welding torch 310 to move the welding torch in a vertical (up and down) direction or in a horizontal (left and right) direction. have. Here, the welding torch moving part 350 may be moved in the vertical direction or the horizontal direction inside the end portion 330 including the upper block, the lower block, the vertical moving rail, and the horizontal moving rail. Specific embodiments of the construction and coupling of the welding torch moving unit 350 will be described later with reference to FIG. 2.

The wire feeder 360 may supply a wire between the pipe that is in close contact with the pipe tight part 340 and the end of the welding torch 310 by using a spool, a roller, or the like provided on the side of the welding member support part 320. .

On the other hand, the pipe support member 400 is to rotate the pipe seated by seating the pipe to be welded, the fixed bed 410, the upper cover 420, the support roller 430, the roller conveying unit 440, etc. It may include.

The fixed bed 410 may be provided in the form of a plate on the upper side of the support plate 131 to install the components constituting the pipe support member 400. In addition, the upper cover 420 is a form coupled to the post and the upper plate provided on both sides to protect the drive motor, rail, ball screw, etc. for moving the support roller unit 430 provided on the fixed bed 410 It can be formed as. The space between the fixed bed 410 and the upper cover 420 may be provided so that the support roller 430 may be moved in a horizontal (left and right) direction.

The support roller 430 may include a roller holder, a shaft rod, a roller, and the like to support the pipe to be welded and rotate the supported pipe. Here, the support rollers provided in the support roller unit 430 may be moved to the central portion or to the outside in accordance with the size of the pipe to support the pipe to be welded according to the driving of the roller transfer unit 440, respectively. Can be. In addition, the support roller provided in the support roller unit 340 is rotated in the same direction (for example, clockwise or counterclockwise) to perform the welding operation along the outer periphery of the pipe to be welded, pipe to be welded Can be rotated.

The roller conveying part 440 may include a driving motor, a rail, a ball screw, and the like, to move the supporting roller part 430 in a central portion or an outward direction. To this end, the ball screw shaft provided in the roller conveying part 440 may have a different screw direction with respect to the center part, and thus, the supporting roller part 430 may be moved inward or outward. Specific embodiments of the configuration and coupling of the roller transfer unit 440 will be described later with reference to FIG.

Next, a welding torch moving part provided inside the end of the welding member in the welding device having the above-described configuration and coupled with the welding torch to move the welding torch in the vertical direction or the horizontal direction inside the end. This will be described in detail.

2 is a view illustrating a welding torch moving unit for moving the welding torch according to an embodiment of the present invention.

Referring to FIG. 2, the welding member 300 may have an end portion 330 connected to the other end of the welding member support portion 320, and the end portion 330 may have the welding torch moving portion 350 therein. It can be provided. The welding torch moving part 350 may move the welding torch 310 (not shown) coupled thereto in the vertical direction and the horizontal direction.

Here, the end portion 330 has a lower plate 331, a protective box 332 in the form of a block plate provided to have a space that is drilled in front and rear, and a welding torch moving unit on the inner side of the protective box 332 ( The 350 may include a vertical moving rail 333 provided to move in the vertical (up and down) direction.

The pipe contact portion 340 provided at the lower end of the end portion 330 is coupled to the contact roller holder 341 and the contact roller holder 341 provided at the lower end of the lower plate 331 to the contact roller 343. It may include a first rotation shaft rod 342 to be a rotation axis, the contact roller 343 in close contact with the pipe to be welded.

Meanwhile, the welding torch moving part 350 provided in the end portion 330 may include a lower block 351, a first vertical moving block 352, to move the welding torch 310 in the vertical direction and the horizontal direction. The first horizontal moving rail 353, the upper block 354, the first horizontal moving block 355, and the like may be included.

Here, the lower block 351 may be provided with a first vertical moving block 352 which is coupled to the first vertical moving rail 333 provided on the inner side of the end portion 330 on the side and is movable, The first horizontal moving rail 353 may be provided at the top to move the upper block 354.

In addition, the upper block 354 may be provided with a first horizontal moving block 355 that is coupled to the first horizontal moving rail 353 provided on the upper surface of the lower block 351 at the bottom.

The welding torch moving part 350 may move in the vertical or horizontal direction in the inner space of the end portion 330, and thus the welding torch 310 coupled to the welding torch moving part 350 may also be in the vertical or horizontal direction. Can be moved.

For example, FIG. 3 is a diagram illustrating a welding member of a welding apparatus according to an embodiment of the present invention.

Referring to FIG. 3, the welding member support part 320 may include a wire feeder part 360 at a side surface, and an end part 330 including a lower plate 331 and a protection box 332 at the other end thereof. The end portion 330 may include a welding torch moving part 350 including a lower block 351 and an upper block 354 therein.

In addition, the welding torch 310 may be coupled to the welding torch moving part 350 to move in the vertical or horizontal direction, and the end part 330 may be in close contact with the lower end of the roller holder 341 and the first rotating shaft rod 342. And a pipe contact part 340 including an adhesion roller 343, and may be in close contact with an outer circumferential surface of the pipe P to be welded through the pipe contact part 340.

Here, the welding torch 310 is a second vertical moving rail 311, the second vertical moving block 312, for fine precision operation such as up and down, left and right, rotation (weaving) in the welded portion of the pipe (P), The first connecting rod 313, the second horizontal moving rail 314, the second horizontal moving block 315, and the second connecting rod 316 may be provided. At this time, the welding torch 310 may be provided with a plurality of drive motors for fine operation, although a specific installation position is not shown, it may be provided at an appropriate position as necessary.

The second vertical movable rail 311 may be fixedly supported with the upper block 354 through the first connecting rod 313 connected to one side, and the second vertical movable block 311 may be the second vertical movable rail 311. ) Can be moved in the vertical direction (z-axis direction).

In addition, the second horizontal moving rail 314 may be provided on one side of the second vertical moving block 312, and the second horizontal moving block 315 may be provided in the horizontal direction by using the second horizontal moving rail 314. (y-axis direction) can be moved. The second horizontal moving block 315 may fix and support the welding torch 310 through a second connecting rod 316 connected to the side.

On the other hand, the welding torch 310 may be rotated about the first connection rod 311 as an axis, thereby performing a weaving operation on the welded portion. Of course, the welding torch 310 is rotated about the second connection rod 316 instead of the first connection rod 311, and thus, the welding torch 310 may perform the weaving operation on the welded portion.

As such, when the pipe P 340 rotates along the outer circumferential surface of the pipe P when the pipe P rotates during welding while the pipe tight part 340 is in close contact with the outer circumferential surface of the pipe P, the pipe P 340 is rotated. Despite the rotation of), the welding torch 310 can be continuously maintained at the welding position of the pipe (P) to be welded.

Next, the piping support member which can seat-support the piping to be welded in the welding apparatus which has the structure as mentioned above is demonstrated.

4 is a view illustrating a pipe support member having a support roller adjusted according to a pipe size according to an embodiment of the present invention.

Referring to FIG. 4, the pipe support member 400 may include a fixed bed 410, an upper cover 420, a support roller 430, and the like.

The fixed bed 410 may be provided in the form of a plate on the upper side of the support plate 131 to install the components constituting the pipe support member 400.

The upper cover 420 is formed in the form of a combination of the post and the upper plate provided on both sides to protect the drive motor, rail, ball screw, etc. for moving the support roller unit 430 provided on the fixed bed 410 Can be. The space between the fixed bed 410 and the upper cover 420 may be provided so that the support roller 430 may be moved in a horizontal (left and right) direction.

The support roller unit 430 includes a support roller holder 431, a second rotation shaft rod 432, a support roller 433, a transfer bar 434, and the like to support the pipe to be welded and rotate the supported pipe. Can be.

The support roller holder 431 may be provided to protrude at the front and rear ends of the fixed bed 410 and the upper cover 420, and has a second rotary shaft rod 432 at the upper end, which is a rotation axis of the support roller 433. can do.

The support roller 433 may be moved to the center portion (inner direction) or to the outer direction, respectively, according to the size of the pipe to support the pipe to be welded according to the driving of the roller feeder 440 (not shown).

In addition, the support roller 433 may rotate the pipe to be welded by rotating in the same direction (for example, clockwise or counterclockwise) to perform a welding operation along the outer circumference of the pipe to be welded. To this end, the support roller unit 430 may be coupled to the second rotation shaft rod 432 on the front or rear side of the support roller holder 431 to the driven pulley (not shown) capable of rotating the second rotation shaft rod 432. It can be provided.

The transfer bar 434 may be formed to penetrate the space between the fixed bed 410 and the upper cover 420 to be connected to the support roller holders 431 at the front and rear ends, and the transfer bar 434 is not shown. It may be connected to the roller transfer unit 440.

5 is a view illustrating a roller conveying portion of the pipe support member according to the embodiment of the present invention.

Referring to FIG. 5, the roller conveying part 440 may be provided at an upper end of the fixed bed 410 and may be protected by an upper cover 420 (not shown).

The roller feed unit 440 is a feed rail 441, a feed block 442, a second ball screw nut block 443, a second ball screw shaft 444, a bearing block 445, a driven pulley 446, The driving belt 447 and the third driving unit 448 may be included.

The conveying rail 441 may be provided to intersect with the conveying bar 434 at the upper end of the fixed bed 410, and the conveying block 442 that may be moved along the conveying rail 441 is the conveying bar 434. Can be coupled to the bottom of the. The first end surface 434a of the transfer bar 434 may be coupled to an inner surface of the support roller holder 431.

The transfer bar 434 may be coupled to the second ball screw nut block 443 provided at the upper end, and the second ball screw shaft 444 may be coupled to the second ball screw nut respectively coupled to the transfer bars 434 on both sides. Block 443 may be coupled through. The second ball screw shaft 444 may have a screw thread in the opposite direction with respect to the driven pulley 446 to simultaneously move the supporting roller 430 (not shown) in an inner direction (center portion) or an outer direction. have.

In addition, the second ball screw shaft 444 may be coupled to the bearing block 445 at both ends, such a bearing block 445 has a lower surface is coupled to the upper surface of the fixed bed 410 or the second end surface ( 445a may be coupled to the inner side of the top cover 420.

The driven pulley 446 may be provided at the center portion of the second ball screw shaft 444, may be rotated by receiving the driving force from the third drive portion 448 through the connected drive belt 447. Through the second ball screw shaft 444 may rotate. Here, the third driver 448 may be provided inside the fixed bed 410.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be readily apparent that such substitutions, modifications, and alterations are possible.

10: welding device 100: base member
110: bogie 120a, 120b: support frame
130: case 140: gay support
150: first drive unit 200: transfer member
210: support post 220: second drive portion
230: first ball screw portion 300: welding member
310: welding torch 320: welding member support
330: end 340: pipe close contact
350: welding torch moving part 360: wire feeder
400: pipe support member 410: fixed bed
420: upper cover 430: support roller portion
440: roller feed section

Claims (10)

A base member including a rotatable case,
A transfer member including a support post provided at an upper end of the case and a ball screw portion coupled to the support post;
A welding member moving in the vertical direction through the transfer member, and having a welding torch at an end of the supporting structure connected to the supporting post, and moving the welding torch in the vertical direction and the horizontal direction;
Comprising a pipe support member for supporting the weld pipe by adjusting the interval between the rollers in accordance with the size of the weld pipe;
Welding device.
The method of claim 1,
The welding member,
A welding member support part connected to the support post and moved in a vertical direction of the support post according to the rotation of the ball screw part;
An end portion extending from an end portion of the welding member support portion and having a box shape having a first internal space;
The welding torch is moved in the vertical direction in the first internal space along a vertical moving rail provided on the inner side of the end portion, and the welding torch is horizontally formed in the first internal space along a horizontal moving rail provided separately. Including a welding torch moving unit for moving in the direction
Welding device.
The method of claim 2,
The welding torch moving unit,
A lower block having a vertical moving block coupled to the vertical moving rail to move in the vertical direction and having the horizontal moving rail disposed on an upper surface thereof;
A horizontal moving block coupled to the horizontal rail to move in the horizontal direction, and having an upper block coupled to the welding torch;
Welding device.
The method of claim 2,
The welding member,
It is provided on the lower end of the end further includes a pipe close contact portion in close contact with the outer peripheral surface of the weld pipe
Welding device.
The method of claim 4, wherein
The pipe contact portion,
An adhesion roller which is in close contact with the welding pipe and rotates the outer circumferential surface according to the rotation of the welding pipe;
A rotating shaft rod which becomes a rotating shaft of the contact roller;
And a close roller holder for holding and supporting the close roller so as to rotate about the rotating shaft rod.
Welding device.
The method of claim 4, wherein
The pipe support member,
A fixed bed provided at the other end of the case;
An upper cover having a box shape to have a second inner space at an upper end of the fixed bed;
Two welding rollers are provided on the upper cover to support the welding pipe, and each of the supporting rollers is moved inward or outward according to the size of the welding pipe, and is supported according to the rotation of the welding pipe. It includes a support roller for adjusting the roller rotation direction equally
Welding device.
The method according to claim 6,
The support roller portion,
A rotating shaft rod serving as a rotating shaft of the support roller;
A support roller holder for fixing and supporting the support roller according to the rotation shaft rod;
A transfer bar connecting both ends of the support roller holder in the second inner space and coupled with a roller transfer part to transfer each of the support rollers in the inward direction or the outward direction;
Welding device.
The method of claim 7, wherein
The support roller portion,
It is connected to a separate drive unit, coupled to the rotation side rod further comprises a driven pulley for rotating the support roller in the same direction as the rotation direction of the welding pipe
Welding device.
The method of claim 8,
The roller conveying unit,
A transfer rail provided to intersect with the transfer bar and to which the transfer block coupled to the transfer bar is moved;
A ball screw nut block coupled to an upper surface of the transfer bar;
A ball screw shaft penetrating through the nut block with the ball screw and having a thread in a different direction with respect to a driven pulley provided at a central portion thereof;
And a driving unit connected to the driven pulley to generate and transmit driving force for rotating the ball screw shaft.
Welding device.
The method of claim 9,
The roller conveying unit,
And a bearing block fixedly coupled to an inner surface of the upper cover or fixedly coupled to an upper surface of the fixed bed at both ends of the ball screw shaft.
Welding device.

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